System information

Configuring Triggers and Alarms 155
• “Use current filter profile” checkbox—when selected, allows you to use the current
protocol filter.
Number of Packets
This trigger is for the number of packets per time period. Typically, it is used to
calculate the packets/second for a particular device (e.g., router or bridge).
• “Number of packets (trigger level)” textbox—allows you to set the actual number
of packets that are sent/received with respect to your current filter. For example, if
you have a router or bridge that is rated at a particular packets/second throughput,
you could set a trigger to let you know if that device is being asked to service more
traffic than it is rated for. To do this, you would first set a filter to see packets that
are going and coming from the device. Then, you would set the number of packets
per second that the device is rated at in this dialog. Running this trigger will let you
know if and when the device is being overrun and whether it is a source of network
slowdowns.
• “Time interval (seconds)” spinbox—allows you to set how long the trigger will
look at traffic and calculate the above conditions before resetting and starting over.
• “Use current filter profile” checkbox—when selected, allows you to use the current
protocol filter.
Occurrence of Hardware Address
This trigger allows you to set when the occurrence of a specified hardware address is
observed.
• “Hardware address” dropdown—allows you to select the hardware address.
• “Address to check” option buttons—allows you to choose from Destination or
Source.
• “Use current protocol filter” checkbox—when selected, allows you to use the
current protocol filter.